- Arts & Culture 5971
- Business & Economics 690
- Computers 317
- Dictionaries & Encyclopedias 82
- Education & Science 76572
- Abstracts 226
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2652
- Coursework 15846
- Culture 8
- Diplomas 411
- Drawings 576
- Ecology 6
- Economy 82
- English 78
- Ethics, Aesthetics 3
- For Education Students 17637
- Foreign Languages 11
- Geography 3
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13871
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 15074
- Political Science 5
- Practical Work 101
- Psychology 60
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sexology 42
- Sociology 9
- Summaries, Cribs 87
- Test Answers 154
- Tests 8965
- Textbooks for Colleges and Universities 32
- Theses 24
- To Help Graduate Students 14
- To Help the Entrant 37
- Vetting 364
- Works 13
- Информатика 10
- Engineering 3062
- Fiction 695
- House, Family & Entertainment 106
- Law 133
- Website Promotion 71
Solution D11-02 (Figure D11.0 condition 2 SM Targ 1989)
Uploaded: 11.04.2018
Content: d11-02_1989.rar 47,38 kB
200 $ | the discount is | 15% |
show all discounts | ||
1 $ | the discount is | 1% |
Seller will give you a gift certificate in the amount of
Product description
Solution D11-02 (Figure D11.0 condition 2 SM Targ 1989)
The mechanical system consists of bodies 1, 2, ..., 5 with weights P1, P2, ..., P5, respectively, connected with each other by yarns wound on step blocks 1 and 2 (Figure D11.0-D11.9, Table D11) . The radii of step blocks 1 and 2 are respectively R1 = R, r1 = 0.4R, R2 = R, r2 = 0.8R. When calculating the moments of inertia, all blocks, rollers and wheels are assumed to be homogeneous solid cylinders of radius R. On the system, in addition to the forces of gravity, the force F applied to the body 3 or 4 acts (if the body 3 does not enter the system, force is applied at point B to the trolley) and pairs of forces with moments M1, M2, applied to blocks 1 and 2; when M <0, the direction of the moment is opposite to that shown in the figure. In the section of the thread indicated in the table in the column "Spring", a spring with a stiffness coefficient c is included (for example, if the column is AB, then the section AB is a spring, if AD, then AD is a spring, etc.); At the initial time, the spring is not deformed. Write for the system the Lagrangian equation and find the law of variation of the generalized coordinate x, that is, x = f (t), assuming that the motion starts from a state of rest; determine also the frequency and period of oscillations made by the bodies of the system as it moves (for the choice of the coordinate x, see "Instructions"). A dash in the columns of the table, where the weights are specified, means that the corresponding body does not enter the system (not to depict in the drawing), but zero - that the body is weightless, but enters the system; for the wheels numbered 4, P4 - their total weight (the weight of the platform of such a trolley is not taken into account).
Feedback
0Period | |||
1 month | 3 months | 12 months | |
0 | 0 | 0 | |
0 | 0 | 0 |